Ainon Capel y Bedyddwyr/ Ainon Welsh Baptist Chapel is a Grade II listed building in the Rhondda Cynon Taf local planning authority area, Wales. First listed on 20 December 1996. Chapel. 2 related planning applications.

Ainon Capel y Bedyddwyr/ Ainon Welsh Baptist Chapel

WRENN ID
peeling-bastion-bittern
Grade
II
Local Planning Authority
Rhondda Cynon Taf
Constituency
Rhondda and Ogmore MP: Chris Bryant (Lab)
Country
Wales
Date first listed
20 December 1996
Type
Chapel
Address
Ainon Capel y Bedyddwyr/ Ainon Welsh Baptist Chapel, Ynyswen, Treorchy, Rhondda Cynon Taff, CF42 6EE
OS grid reference
SS 953 972
Coordinates
51.66445, -3.51451
Source
Cadw listing

Also on this page: sale history · EPC · related consents · flood risk · radon risk · weather exposure · detailed attributes ↓

Description

This is a Welsh Baptist chapel, constructed in 1899. The chapel’s front facade is of snecked rockfaced stone with ashlar dressings, while the sides are rendered. It has a Welsh slate roof. The three-bay frontage features a lightly defined pediment containing a small, glazed gable window with a heavily moulded surround. An inscription panel reads “Ainon Capel y Bedyddwyr AD 1899”. Gallery level windows are round-headed with margin glazing and decorative capitals, keystones and plinths. The central ground floor doorway has an entablature, piers with deep plinths, and voussoirs over a round arched door surround with circular motifs in the overlight. Double plank doors are fitted. Flanking the doorway are square-headed sash windows with decorative tooling to the channelled voussoirs, surrounds, staggered quoins and plinth. Inscription plaques above the entablature record details of donors, the pastor, and Jonathan Jones, who is described as the ‘sculptor and builder of Treorchy’. The side frontage has four bays with round-headed windows with horned sashes in a moulded render surround at gallery level and square-headed sash windows at ground floor. A single-story lean-to wing at the rear extends to the left, creating a separate entrance with a stone inscription reading ‘Ysgoldy 1893’. The front has a shallow courtyard, enclosed by a rockfaced stone and ashlar boundary wall with piers topped by pyramidal capstones, iron railings and decorative gates.

Inside, there are raked galleries on three sides, supported by fluted cast iron columns with foliage capitals. The gallery fronts have shallow boarded panels edged by deep mouldings. The ceiling is panelled with three plaster roses, and the glazing margins incorporate some coloured glass. Other interior features include boarded dados, four-panelled doors, scribed walls, a pulpit with flanking steps used in baptism services, and a round arched plaster reredos.

Local climate

Ainon Capel y Bedyddwyr/ Ainon Welsh Baptist Chapel sits in one of the wettest parts of the UK, with an average of 1,260 mm of rain a year. This makes it wetter than 93% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 91% of listed buildings.

It experiences an average of 42 freeze-thaw cycles a year, more than 80% of listed buildings. Of these, 20 follow at least 1 mm of rain in the preceding 48 hours. Average temperatures at this location have risen by 0.3°C per decade since 1991.

Averages for 1991–2020; temperature trend 1991–2025. Figures describe the wider area (a grid cell of roughly 10 km), not the individual site. Contains modified Copernicus Climate Change Service information 2026.

More on this building

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  • Full EPC report — heating system, energy costs, size, glazing, construction etc.
  • Sale history — 1 transaction since 2025
  • Related listed building consents — 2 applications
  • Detailed attributes — period, style, materials, features
  • Flood risk assessment
  • Radon risk assessment
  • Weather exposure and heating demand — rain and frost month by month and year by year, wind direction, solar and humidity
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